Corporated



Sept 27, 1932- c. L. WARNER 1,879,596

OIL BURNER Filed Dec. 27, 1930 2 Sheets-Sheet l 5% Kvm OIL BURNER '2 sheets-sheet 2 Filed Dec.

wvenkoc Patentedsept. 27, 1932 j UNITED STATES PATENT OFFICE CEABLESL. WARNER, 01E MILFORD, CONNECTICUT, ASSIGNOR TO BAIRD-WARNER, IIN--` CORPORATED, F BRIDGEPORT, CONNECTICUT, A CORPORATIN 0F CONNECTICUT 'oIL BURNER i Application mea December 27, 1930. serial no. 505,09s.

This invention relates to a fuel burning device, and more particularly to an oil burner for use in household heating plants, although of course, it i`s applicable for use in any loca- 5- tion Where such a fuel burner is desirable. It

is an obj ect of the invention to provide an improved structure for supporting the refractory lining or fire pot bowl which is usually built around this type of burner, which construction is very simple,1nay be easily' formedon the job to lit any size or shape of fire box without any special equipment, and will effectively support the lire pot structure in proper position without danger of sagging or 7-5 permitting it to fall.

It is also an object of the invention to provide an improved burner construction which will greatly facilitate the mounting and removal of the motor and parts operated thereby for easy renewal, inspectionor repair.

Other objects and advantages will appear as the description of the invention proceeds,

it being of course, understood that various modifications may Ibe employed without departing from the principles of the invention,

reference being had to the accompanying drawings forming a part of this specification.

In these drawings: y

l Fig. 1 is a vertical' section through the lire 3U pot portion of a heater showing my improved burner applied thereto, the burner being shown in side elevation.

' Fig. 2 is a partial side elevation and a partial vertical sectionof the burner on an enlarged scale, the refractory lining being omitted; and

Fig. 3 is a horizontal section through the heater on a plane just above the burner a portion of the structure being broken away to more clearly show theconstruction.

These liquid fuel burning devices are to a large extent used as replacement structures for solid fuel burning grates and lire boxes in various types, shapes and sizes 0f household heaters. In setting up these devices after the e grate is removed` there is usually built about the burner a sort.of bowl or lining of refracl tory material such as brick, clay or sort of lire proof cement', in effect it might be called a 5UV fire proofor refractory concrete, packed and merely r`used for illustration as the device is molded on a supporting structure Ibetween the burner and the walls of the lire boxes, but as there are a large number of different 'types and sizes of heatersit is often diicult to prop- `\erly support and retain this refractory llning.

inposition so -that it'will not latercrack and falL down in use. I have devised an improved structure whereby this lining is properly held in position with no danger'of its sagging or falling down, and have soI devisedit that it lo4 may be quickly and easily applied to t any size or shape of lire box Without the necessity --of the'installing crew carrying any specialA equipment.

In the drawings is shown at 10 a conventional type of ash pitcasting on the upper end of which is supported the heater proper 11.1In the present instance the walls of a water heater are shown, but of course, this-is equally adapted foruse in lot air or steam heaters. The device is alsoshown as having a circular fire box or combustion chambery, but it will be evident from a more complete description that this device is equally. adapted for installation in square, oblong or any other shape of fire box. The fuel burn-, ing device illustrated comprises a support ining a pan or tray 13"supported on the floor of the ash pit by any suitable means such as legs 14. Spaced above this pan or tray is a. neck ring 15 having an upright opening 16 therethrough and provided with an outwardly extending substantially horizontal-flange 17 having in its top surface a plurality of radially extending recesses or grooves 18. These recesses or grooves may be of various shapes, but are preferably substantially V shaped in cross section as such a shape will automatically and tightly fit and hold any size of pipe or bar which may be mounted therein. These grooves or recesses are adapted to receive the inner end portions of suitable lengths of pipe 19. It is preferred to use pipe for this purpose because when installing these devices pipe must be carried to make the necessary fuel connections with the fuel supply tank and other connections and, therefore, by using this pipe no extra or special equipment need vbe provided ring 15.

for or carried by theinstalling crew, but of course, solid bars may be used if desired. Throughout the speclcation and claims I have used the word rod as being either a pipe or a solid bar, but ordinarily a pipe will be used as it is stronger for the amount of material it contains and as indicated it does not re uire any s ecial equipment.

lso exten ing horizontally therefrom the neck ring is provided withv a circumferential rib or flange 20 spaced above the flange 17, and it need not come out as far as the lower flange. This flange carries means for clamping the pipes 19 in the grooves 18 such for example as set screws 21. The whole structure ma be greatly strengthened by strengthening ribs 22 and 23. The neck ring is supported above the lower support structure including the tray 13 by any suitable number of npri ht rods 24. y

The uel burning device also includes the rotar atomizer 25 located above a baffle ring 26 a .justably supported' above a ring 27 mounted on the to of the neck ring 15. The supporting ring 217J has an outwardly extending flange 28 resting on the top edge of the ring 15 so that it is securely held thereby but may be removed by merely lifting it from the pair of adjusting screws 29 threaded in the ring 27 engage the undersides ofthe flange30 of, baiile ring 26 and another pair of screws 31 pass through this ilange 30 and are threaded into the ring 27. Thus, by adjusting the screws 29 and 31 the baffle ring 26 may be adjusted to the proper height to provide the desired outlet opening 32 for alr to support combustion and also to properly level the ring 26. This ring is spaced from the atomizer 25 to provide an air passage 33.

The atomizer 25 is driven by an upright ed in outline at 34. This motor casing has a groove 35 in its lower end to receive the heads of supports 36 carried by coiled springs 37 supported by the tray or support 13.A Preferably there are three of these supports 36 equally spaced to give a three point support for the motor. Within the motor assembly is a conduit 38 for leading fuel to the atom-` izer 25 and the liquid fuel is conducted to this conduit through a flexible conduit 39 connected to the conduit 38 by an easily detachable connection 40. The conduit 39 leads from a cut on' valve 41--closed automatically by weight-42 should oil leak down into a pan 43 to operate a trip 44 and release the arm 45 as disclosed more specifically in my copending application for oil burner control, Seria-l No. 504,734 filed December 26, 1930. There is also` an automatic `electrical control for the liquid fuel indicated at 46 as disclosed in my coending application for oil burner control, erial No. 549,670 filed'July 9. 1931.

The electrical connection for this control is through the conduit 47 from the connector and junction box 48, the leads from the house' system to this box being shown at 49. Another cable 50 leads from this box to the ignition device 51 which is not disclosed specifically herein, and another flexible cable 52 is connected by an easily removable plug connection 53 .at the side of the motor casing to lead. the necessary electrical energy to the.

motor.

It will be evident from the description that v motor is merely let down through the opening 16 to rest on the supports 36, then lthe detachable coupling 40 is connected by manip- "ulating the hand screw 40v to connect the fuel supply. pipe 39 to conduit 38 and the electrical attachment plug 53 is inserted in the socket in the side of the motor casing. Then after placing the rings 27 and 26 in position on the ring 15 about the atomizer, the device is ready for use. If it is desired to removethe motor and atomizer for inspection,- renewal or repair all that is necessary is to pull out the attachment plug 53, disconnect the detachable connection 40 by loosening the screw 41 Aand lifting loil' the rings 26, 27. The motor and atomizer may then'be removed by merely vlifting the motor upwardly through the opening 16 in the ring 15. It will thus be seen that the ring electric motor, the casing of which is indicatv-`'1511215 an @obstructed Opening therein 0f a size to permitv easy and( free insertion and removal of the motor and atomizer without tearing down the structure or assembly other than removing the rings 26, 27, which can be merely lifted out of position, after detaching the detachable connections 40 and 53. The mounting of the new motor and atomizer and getting it ready for operation can be accomplished in as easy and rapid a manner by a mere reversal of these operations.

In installing the device in thefurnace it is mounted in the ash pit after the grate has been removed. The installer then cuts the required number of lengths of pipe 19 from the stock he' must carry with him for the necessary fuel connections. These pipes are cut to the proper length to just reach to the inner surface of the fire box at their outer ends as illustrated on the drawings, and these outer ends may rest on and be supported by the grate supporting ila-nge 54 or grate lugs which may remain in position. The pipes are also preferably inclined and rest at their outer ends a ainst the inner surface of the fire box as sown so that even tho there is no flange 54 these outer ends will be supported by the walls of the fire box, and as they are inclinedthe effect of the weight of the lining is to bind these pipes at their outer ends against the surface of the fire box and at their inner ends againstthe walls of the neck ring or the securing and clamping` means 21, thus forming a' rigid, ,strong support which is ufirmly held in position, and which also retains the-burner central in the lire box. Also as indicated above it is preferred that thel lower flange 17 extend outwardly farther than the upper flange 20 so that in mounting the pipes in position the outer end can be elevated while theinner end is inserted in the grooves 18 Kand then the outer end can be lowered to bring it vinto engagement -with the inner/ surface of the lire box and then clamped in this position bythe set screws 21. This assists in easy mounting of the pipes in position and furthermore provides for-an adjustment of. the pipes so that the outer ends can always be mounted in engagement with the walls of the fire box. The installer thencuts a plate from shcetmetal to rest on the top of the pipes 19. This plate may be cut in one piece or 1n a number of sections as desired and of a shape to fit the shape of the tire box,it

extending fromthe edge of the ring 15 to f the inner surface of the fire box walls as shown. Then refractory lining 56 is placed and molded on the top ofthis plate preferably to substantially the shape shown in' the drawings. Thus, it is preferably shaped to form a sort of bowl shaped combustion chamber about the atomizer for a flame indicated at 57 and may be 'brought to any height desired. It is usually made of tire clay or similar refractory`material which is ordinarily tamped and molded in position as a plastic-.and allowed to harden. It fills the space between the neck ring 15 and the inner wall of the fire box and is brought upto about the top surface of the ring 15 upd permits easy removal of the rings 26, 27. This lining prevents direct impin ement of the. flame on the walls of the lire ox, and also after becoming hot assists in complete combustion of the fuel. It closes the space between the ring 15 and the fire box so that the air for combustion passesv up through the ring 15. Another important advantage of the pipes 19 extending to and engaging the walls of the fire box at their outer ends is that they properly center the burner and this position sothat it is not forced out of its proper position during the act of firmly tamping ,the lininm in position. In old types of constructions this was a very serious objection because often after the burner 'was properly placed it was shifted out of position in tamping in the lining and Arequired retain it in the burner.

It will be evident that this construction I makes a very effective support for the refractory lining which support can be easily constructed and assembledon the job without any special equipment tov fit any size and shape of fire box. After the pipe lengths are cut to proper length one` end of each is merely inserted in the proper groove 18 and clamped in position by set screw 21 above it. It, therefore, makes port for the refractory l'ning and one which will support it in positio indefinitely without sagging. As the pipes may be cut to any length desiged, this support can be made to t any size or shape of fire box with no trouble whatever. vIt is also to be noted that with this construction of burner, the motor and atomizer maybe easily and quickly rev moved without tearing down any of the structure by merely removing the rings 26, 27 and then lifting the atomi-zer and motor upwardly through the opening 16 in the ring 15, all of vwhich are easily raccessible through the usual fuel door, not shown, lead- -ing tothe combustion chamber. The view of Fig. 1 is from the front so that the ash pit door and fuel doorto thecombustion chamber would beJ in the portion of the heater structure which is not shown.

invention, what I claim is:

1. In a fuel burningdevice, a frame having a laterallyextending flange provided with a plurality of recesses extending rods in saidy recesses, a plate mounted on said rods and supported thereby, a combustion lchamber lining of refractory material mounted on the plate, and a means for producing a flamein the combustion chamber.

2. In a fuel burning device, a frame having a laterally with a plurality of radially extending grooves in its top Wall, rods seated in said grooves and extending laterally Afrom the flange, means forsecuring the inner ends of the rods, a plate mounted onpand supported by the rods, alining of refractory material lmounted on theplate, and a flame producing means surrounded by said lining. j

e 3. ing a with a plurality'of radially extending grooves in its Atop surface, a plurality of supporting rods mounted at one endfin said grooves and extending `laterally from the frame, a flange over the inner ends of the -125 a very rigid solid sup-- extending iange provided Having thus set forth theA nature of my I therein, laterally lis' having a substantially horizontal fiange rovided with a plurality of radially exten ing substantially V-shaped grooves in its top surface, a `support for said ring, a plurality of rods seated in said grooves and extending laterally from the ring, said ring also having rods, a refractory lining on the plate, and a flame producing through the ring.

5. In a fuel burning device, a support, a neck ring spaced above the support, an upright motor mounted on the support extending upwardly into the ring, a rotary fuel atomizer formed as a part of the motor assembly and located above the ring, the openino in the ring being unobstructed and of suiiicient size to permit removal of the motor upwardly through thering, laterally extend- 4ing rods carried by the ring, a plate mounted on said rods, and a refractory lining carried by the plate and surrounding the ring.

6. In a fuel burning device, a support, a neck ring means extlending'upwardly porting ring mounted on the neck ring, an

upright motor mounted on the support extending u wardly into the neck ring, a rotary fuel atomlzer formed as a part of the motor assembly and located above the neck ring, a baffle ring associated with the fuel atomizer and adjustably supported on the supporting ring, a conduit also in said assembly for conducting fuel to the atomizer, a readily detachable flexible connection from a source of fuel supply to said conduit, spring supporting elements for the motor on the support on which the motor rests, said-.supporting and baille rings removable as a unit fromthe neck ring, said neck ring having an unobstructed opening. of a size to permit free passage of the motor' for mounting on and removing from said elements when the supporting and bafiie rings are removed, and a detachable electrical supply connection' tothe motor.

7. In a fuel burning device, asupport, aV

neck ring spaced above the support, a supporting means mounted on the neck ring, an upright motor mounted on the support extending upwardly into the neck ring, a rotary fuel atomizer formed as a part of the motor assembly and located above the neck ring, a

- baie ring associated with the fuel atomizer and adjustably mounted on the supporting means, a conduit also in said assembly for conducting fuel tothe atomi'zer, a readily detachable connection from a source of fuel supply to said conduit, said supporting means and-baffle ring removable as a unit from the' y neck ring said neck ring having an unobstructed opening of a size to permit free passage of the motor for mounting on and removal from the support when thesupporting means andbaffle ring have been removed, a

spaced above the support, a suprefractory lining surrounding the ring and atomizer, and means carried by the ring for supporting said lining.

8. In a heater of the character described, a fire box, a fuel burning device in said fire box including a frame having' a laterally extending flange provided with a plurality of laterally extending grooves in its top wall, rods seated in said grooves and extending laterally from the flange, said rods being inclined upwardly toward their outer ends and resting at these ends against the walls of the fire box, a plate mounted on and supported by the r0ds,\a lining of refractory material mounted on the plate, and a flame producing means 'surrounded by said lining. 4'

9. Ina fuel burning device, a frame having a laterally extending flange provided with a plurality of laterally extending grooves in its top wall, rods seated in said grooves and extending laterally from the flange, a lining of refractory material carried vfiange for securing the rods in the grooves,

a lining of refractory material supported by the rods, and a flame producing means surrounded by the lining.

In testimony whereof I affix my signature.'

CHARLES L. WARNER. 

